11670728 has 8 divisors (see below), whose sum is σ = 21882630. Its totient is φ = 5835360.

The previous prime is 11670727. The next prime is 11670733. The reversal of 11670728 is 82707611.

It can be written as a sum of positive squares in only one way, i.e., 10745284 + 925444 = 3278^2 + 962^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 11670694 and 11670703.

It is not an unprimeable number, because it can be changed into a prime (11670727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 729413 + ... + 729428.

Almost surely, 2^11670728 is an apocalyptic number.

It is an amenable number.

11670728 is a deficient number, since it is larger than the sum of its proper divisors (10211902).

11670728 is a wasteful number, since it uses less digits than its factorization.

11670728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458847 (or 1458843 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 32.

The square root of 11670728 is about 3416.2447219132. The cubic root of 11670728 is about 226.8293852748.

The spelling of 11670728 in words is "eleven million, six hundred seventy thousand, seven hundred twenty-eight".